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Q38 (NDA-I/2011) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Applied everyday chemistry Answer Verified

Bronze is often used to make statues and medals whereas brass is used in making utensils, scientific apparatus and cartridges. Both brass and bronze are copper containing alloys, yet they differ in their chemical composition for additionally containing:

Result
Your answer: —  Â·  Correct: A
Explanation

Brass and bronze are both copper-based alloys but are distinguished by their primary alloying elements. Brass is primarily an alloy of copper and zinc [c2][c4][t1]. Its properties, such as high workability and corrosion resistance, make it suitable for utensils, scientific apparatus, and cartridges (specifically 'cartridge brass' which is 70% copper and 30% zinc) [t1][t5]. In contrast, bronze is an alloy of copper and tin [c1][c2][c4]. Bronze is generally harder and more resistant to corrosion than brass, which makes it the preferred material for statues, medals, and bells [t1][t2]. While both alloys may contain trace amounts of other elements like lead, nickel, or manganese to enhance specific properties, the fundamental chemical difference lies in the addition of zinc for brass and tin for bronze [t3][t4].

Sources

  1. [1] Science , class X (NCERT 2025 ed.) > Chapter 3: Metals and Non-metals > QUESTIONS > p. 54
  2. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 8: Nature of Matter: Elements, Compounds, and Mixtures > A step further > p. 118
  3. [3] Themes in world history, History Class XI (NCERT 2025 ed.) > Chapter 1: Writing and City Life > Mesopotamia and its Geography > p. 12
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